We see the world with the retina, ganglion cells send axons to the optic nerve up to the occipital cortex in the brain. The mind growths by all the information from the inner and outer worlds.

The teleost retina is used as a model for the vertebrate retina. The electromagnetic field particle Mindtron, explains the existence of the mind in the human brain.

There are correlations between the intelligence quotient and cerebral gray matter size, women with prefrontal and temporal association cortices, men with temporal–occipital area. The primary light receptor cells in the retina are the photoreceptor cells rod and cones.

A third light sensing cell, the photosensitive ganglion cell, produces the circadian rhythms and reflexive responses, the pupillary light reflex. The retina has 7 million cones and 75-100 million rods with energy requirements greater than the brain needed to renew the photoreceptor outer segments, of which 10% are shed daily.

The central retina predominantly contains cones, while the peripheral retina contains rods. In total, the retina has about seven million cones and a hundred million rods.

The central retina pcontains cones, while the peripheral rods. .